PRODUCTS>>>Refractory>>>Calcined Aluminium
Calcined Aluminium
Calcined Aluminium, also call α-Aluminum oxide is made from Aluminum oxide and Al(OH)3, calcined at high temperature in a tunnel kiln. It is characterized by high purity, high transformation for α-Al2O3, high true density, good crystal stabilization, narrow particle distribution, good dispersity. It is widely used for ceramic, electro-porcelain, refractory, spark plug, activator , catalyst carrier, glass insulator filler, high grade insulation parts, high purity refractory fiber, Filler for Epoxy Resin Casting Products, and for abrasives in blasting and grinding.
Advantages
1. The most advance high temperature gas tunnel kiln with 120meter length, high automation, safe production, good energy economization and environmental protection. Its annual output for alpha-aluminum oxide is 12000MT.
2. High purity, high transformation for α-Al2O3, high true density, good crystal stabilization, narrow particle distribution, good dispersancy.
3. Equipped full line of test method. The laboratory is certified by government Inspection Bureau, that assures its quality stability.
4.ISO9001 certified, firm management.
Specification
ITEM |
Model |
Specification |
Application |
α-Al2O3 |
YFA--1 |
Na2O≤0.04，crystal size 4～5μm |
hot pressure casting、Hydrostatic Pressure Ceramics |
YFA--2 |
Na2O≤0.04，crystal size 3～4μm |
hot pressure casting、Hydrostatic Pressure Ceramics |
|
YFA--3 |
Na2O≤0.05，crystal size 2～3μm |
Electronic substrate、Hydrostatic Pressure Ceramics |
|
YFA--5 |
Na2O≤0.03，crystal size ≈2μm |
fine ceramics、Electronic substrate |
|
YFA--6 |
Na |
fine ceramics、refractory castable |
|
YFA--7 |
Na2O≤0.03，crystal size ≈1μm |
99 alumina ceramics |
|
α-Al2O3 |
YFA-10G |
Na2O≤0.05，d50 5～6μm |
hot pressure casting Ceramics |
YFA-11G |
Na2O≤0.05，d50 3～4μm |
Electronic substrate |
|
YFA-12G |
Na2O≤0.04，d50 2～3μm |
Electronic substrate |
|
YFA-13G |
Na2O≤0.05，d50 ≈2μm |
Ceramic Seal |
|
YFA-15G |
Na2O≤0.05，d50 ≈4μm |
refractory castable（1） |
|
YFA-16G |
Na2O≤0.1，d50 ≈2μm |
refractory castable（2） |
|
YFA-P1 |
crystal size 1μm，d50=2-5μm ，α-92% |
Stainless steel polish |
|
YFA-P2 |
crystal size 4μm ，d50=6-12μm ，α-95% |
Stainless steel polish |
Chemical Analysis
α- Al2O3 Raw Powder
ITEM |
Chemical Content（%） |
True Density |
α-Al2O3 |
Crystal Size |
|||
Al2O3 |
SiO2 |
Fe2O3 |
Na2O |
||||
YFA--1 |
≥ 99.7 |
≤ 0.04 |
≤0.05 |
≤0.05 |
≥3.96 |
≥96 |
4～5 |
YFA--2 |
≥ 99.7 |
≤ 0.04 |
≤0.05 |
≤0.05 |
≥3.95 |
≥95 |
3～4 |
YFA--3 |
≥ 99.7 |
≤ 0.04 |
≤0.05 |
≤0.04 |
≥3.95 |
≥95 |
2～3 |
YFA--5 |
≥ 99.7 |
≤ 0.04 |
≤0.05 |
≤0.04 |
≥3.95 |
≥95 |
～2 |
YFA--6 |
≥ 99.7 |
≤ 0.04 |
≤0.05 |
≤0.05 |
≥3.95 |
≥95 |
1～2 |
YFA--7 |
≥ 99.7 |
≤ 0.04 |
≤0.05 |
≤0.05 |
≥3.95 |
≥95 |
～1 |
α- Al2O3 Micro Powder
ITEM |
Chemical Content（%） |
True Density |
α-Al2O3 |
D50,μm |
|||
Al2O3 |
SiO2 |
Fe2O3 |
Na2O |
||||
YFA-10G |
≥ 99.6 |
≤ 0.15 |
≤0.05 |
≤0.05 |
≥3.96 |
≥96 |
5～6 |
YFA-11G |
≥ 99.6 |
≤ 0.15 |
≤0.05 |
≤0.05 |
≥3.95 |
≥95 |
3～4 |
YFA-12G |
≥ 99.6 |
≤ 0.15 |
≤0.05 |
≤0.04 |
≥3.95 |
≥95 |
2～3 |
YFA-13G |
≥ 99.6 |
≤ 0.15 |
≤0.05 |
≤0.04 |
≥3.95 |
≥95 |
～2 |
YFA-15G |
≥ 99.6 |
≤ 0.20 |
≤0.05 |
≤0.05 |
≥3.95 |
≥95 |
～4 |
YFA-16G |
≥ 99.6 |
≤ 0.10 |
≤0.05 |
≤0.10 |
≥3.95 |
≥95 |
～2 |
YFA-P1 |
≥ 99.6 |
≤ 0.10 |
≤0.05 |
≤0.10 |
≥3.95 |
≥95 |
2～5 |
YFA-P2 |
≥ 99.6 |
≤ 0.20 |
≤0.05 |
≤0.10 |
≥3.95 |
≥95 |
6～10 |
Packing
25kg/bag, one inner plastic bag, two poly-woven bags or one coated poly-woven bag. Paper bag or carton pakcing is available. Wooden pallet or jumbo bag is also available.